Networking Anomalies: Policy Implementation

Task Description: Assess adequate access controls based on principles of least privilege and need-to-know.

Scenario

An inexperienced user has configured the access control lists for the directories within the fileshare in a manner that does not reflect company policy. Correct the linux access control lists so that they comply with the provided policies.

How to correct the Linux access control lists in general? [Since it is Linux os] please provide commands with the steps